Pick.



PATENTED OUT. 8, 1905'.

A. WALKER & R. W. MEWESu PICK.

APPLICATION FILED JULY 30, 1904.

UNTTED STATES PATENT ()EETQE.

ALEXANDER \VALKER AND RICHARD \VATSON MEXVES, OF W HATCHEER, IOW A.

PICK.

No. Bones.

Specification of Letters Patent.

Patented Oct. 3, 1905.

Application filed July 30, 1904. Serial No. 218,804.

To all whom, it may concern:

Be it known that we, ALEXANDER VALKER, a citizen of the United States, and RICHARD VA'rsoN Mnwns, a subject of the King of Great Britain, both residing at \Vhatcheer, in the county of Keokuk and State of Iowa, have invented new and useful Improvements in Picks, of which the following is a specification.

This invention relates to what we shall for convenience term a pick, the object of the invention being to provide a simple and effective means for holding the blade in solid and firm relation with the handle, such means being of such a character as to assure with rapidity and ease the removal of the blade and its reapplication.

As initially stated, we have adopted the term pick simply as a matter of convenience, for it will be obvious as the nature of the invention is better understood that the improvements may be used in connection with other kinds of tools, and the same advantages will follow such other uses.

In the drawings accompanying and forming a part of this specification we represent clearly one advantageous adaptation of the invention, which we will fully disclose in the following description; but we do not limit ourselves to the showing thus made, for certain variations may be adopted within the scope of our claims succeeding said description.

Referringto said drawings, Figure 1 is a side elevation of a pick involving our invention and showing the head thereof locked in place. Fig. 2 is a top plan view of the socket, illustrating a locking-bolt in section and in working relation with the socket. Fig. 3 is a vertical sectional elevation of said socket. Figs. 4 and 5 are top and bottom plan views of the blade. Fig. 6 is a detail of said locking-bolt.

Like characters refer to like parts throughout the different views.

The article represented in the accompanyfact the hole opens into the interior of the socket, the latter being represented as having its body hollow. Said hole is illustrated as having a lateral offset or offsets, as 4, two of such offsets being illustrated and as radially disposed relatively to the hole. The purpose of the hole 3 and the lateral offsets 4 will be hereinafter described.

The blade of the pick is denoted by 5, and its opposite ends are pointed. The blade, except as hereinafter described, is of a substantially familiar kind and is made of the material usually employed in the manufacture of pick-blades. At a point substantially centrally thereof said blade has a circular hole, as 6, havinglateralofi'sets, as 7. From thisit will be obvious that the shape of each of the holes 3 and 6 with their offsets is substantially the same. \Vhen the blade is to be applied to the socket member 2, the offsets in the two parts will be in register or will coincide for a purpose that will hereinafter be obvious. The socket member 2 has opposing slots, as 8, laterally out of line with each other. These slots 8 are shown as opening into the substantially circular hole 3 and as extending entirely through the stock of the socket, although this is not essential.

Upon the upper side of the socket 2 and indicated as being integral therewith are the studs or protuberances 9, which are situated beyond the outer ends of the oifsets 7 and which are adapted when the blade 5 is in working relation with the socket to fit seats 10, illustrated as substantially concaved depressions in What might be considered the under face of said blade, thereby to aid the locking-bolt hereinafter described in preventing sidewise movement of said blade.

The main locking device is denoted by 11, and it is represented as consisting of a bolt substantially circular in cross-section and the diameter of which approximately agrees with those of the holes 3 and 6. The inner end of v the bolt 11 is provided with the lateral projections or fins 12, extending radially from the bolt and diametrically opposite to each other. It will therefore be apparent that the and when in operative position it is adapted to bind against the blade 5 and to fit within a recess M in the upper face of said blade.

It will be assumed that the parts are separated and'that it is desired to assemble the same. To accomplish such result, the rounded studs or protuberances 9 are fitted in the seats or concavities 10 in the under or inner side of the blade 5. This will bring the holes 3 and 6 and their lateral offsets 4 and 7, respectively, into register. In other words, the studs properly position the blade with respect to the socket member. \Vhen the two parts are thus positioned, with the inner face of the blade engaging the upper fiat face of the socket, the bolt is slipped into place, the body or shank thereof falling through the holes 6 and 3 in succession, while the projections or fins 12 traverse the oflsets 7 and 4:, respectively, until the nut of the bolt strikes the bottom of the recess 14. When this occurs, the said projections or fins 12 will be in line with the slots 8, so that by turning the said bolt the projections or fins will be caused to enter said slots and to abut against what might be considered the rear walls thereof. The parts are so related that it is only necessary to give the bolt a quarter of a turn to have the projections or fins 12 strike the rear walls of the slots 8. When this is done, the blade is held against outward displacement by the projections or fins being positioned in the slots. After the projections or fins strike the rear walls of the two slots the nut 13 will be given a slight turn by a wrench to force its inner face solidly against the bottom of the recess 1a in order to maintain the bolt and blade against accidental displacement while in use. To separate the parts, it is only necessary to give the nut a slight turn, when the bolt can be reversely turned to effect the separation of the parts.

Ne have described the part 5 as a blade. It will be apparent that the same may be any other tool, for, as indicated in the opening part of this specification, the invention is not limited to any particular use.

Having thus described the invention, what we claim is- 1. A socket having a hole extending thereinto, and slots at opposite sides of said hole and opening thereinto, combined With a toolblade fitted against the socket and having a.

hole to register with that in the socket, a bolt adapted to extend through the registering holes and provided with lateral fins to enter said slots when the bolt is turned, and a nut threaded onto the upper end of the bolt and adapted to engage the outer face of the toolblade.

2. A socket having a hole extending thereinto, lateral offsets extending from the hole, and slots at' opposite sides of the hole, opening thereinto, combined With a blade having a hole extending through the same, and lateral offsets extending from the hole, a bolt adapted to project through the holes in the blade and socket respectively and provided with lateral fins to enter said slots when the bolt is turned, said bolt having a nut at its outer end to engage against the outer side of the blade.

3. A socket having a hole extending thereinto, and slots at opposite sides of said hole and opening thereinto, said slots being laterally out of line, and said socket being provided with studs, a blade to fit against the socket, having seats to receive said studs, and a hole between the seats, a bolt adapted to extend through the holes in the blade and socket respectively and provided with fins adapted, when the bolt is turned, to enter said slots, and a nut on the bolt to fit against the outer side of the blade, the latter being recessed to receive the nut.

4. A socket having a hole extending thereinto and slots at opposite sides of and opening into said hole, combined With a tool-blade fitted against the socket, and a member extending entirely through the tool-blade and provided with lateral fins, said member being arranged to be turned by the operation of its outer end to cause the fins to enter said slots.

In testimony whereof We have hereunto set our hands in presence of two subscribing Witnesses;

ALEXANDER WALKER. RICHARD \YATSON MEWES.

\Vitnesses:

ILLIAM EDWARD WALKER, .toenatr SCHOTT. 

